Select the correct indirect form of the given sentence.

 “ You must not deceive anyone,” my mother said.

My mother suggested me not to deceive anyone.

Answer 2 is the correct answer.
The given sentence is in modal but in indirect form given in Imperative sentence so we should apply the rule of Imperative sentence.
In Imperative sentence say/says/said will be changed according to the sense of reported part, suggest, request, warn etc.
As a conjunction “to” will be used.
So the correct answer is : My mother suggested me not to deceive anyone.